Nov 22, 2013

Itinerant Digital FUDS Archive Moves for 2nd Time this Year

Our selected archived Spring Valley project documents have been moved and are now at  These documents were most recently housed on a SharePoint site that required a username and password.  This new site is public and does not require a username and password to assist in ease of access to these selected archived project documents.

Editor's note:  i.e.  for the second time in 2013 the Spring Valley FUDS project archive has been moved to a new website,  once again changing all previously bookmarked URLs.
 75mm under Glenbrook Road front porch

Nov 12, 2013

Perchlorate Levels Next to Kreeger Hall "Went Up Significantly"

Up on American University in front of Kreeger Hall we have wells PZ-4, MW-45 and MW-44 all within twenty feet of one another ... MW-44 is a more recent well that we sampled in March and September of 2012.  When we first sampled it was 33, 34, 36 parts per billion; it looks like it went up a little bit in April to about 41 ppb at 80 - 95 feet.  And then 45(S) and 45(D) at 120 feet and about 150 feet: when we first sampled that in September 2012, it looked like there were relatively low levels of perchlorate, but then when we sampled it again in May the concentration went up significantly [to 54 ppb].
... We're going to continue our semi-annual and quarterly sampling efforts.  We have a sampling event planned next month in December and we'll also sample again in June.  For the quarterly sampling locations, we'll sample in March and September as well ... When we determine that we have sufficient data to define the nature and extent of contamination, we'll begin writing the draft remedial investigation report.  We'll also need to sit down with EPA 
and the District to talk about what these results mean.
Todd Beckwith, USACE
RAB Meeting
November 12, 2013

Nov 2, 2013

Utility Undertakes Long Overdue Spring Valley Water Main Upgrade

DC Water is performing water main upgrades within Spring Valley as part of its Capital Improvement Program.  These upgrades are designed to improve water quality, system reliability, water pressure, and improve available fire flow ... Since the existing water mains were constructed after American University Experiment Station was closed, it is unlikely that any chemical warfare or explosive materials will be encountered during construction of the water main upgrades.
... DC Water has adopted a conservative approach to reduce risk, including performing soil testing by coring through the pavement and collecting samples for laboratory analysis; minimizing excavation by lining water mains where existing pipe size is adequate and replacing water mains in the same trench where pipe upsizing is needed; providing hazards recognition training for construction crews; and having an unexploded ordnance specialist present to observe excavation work.
DC Water & Sewer Authority
Spring Valley Water Main Upgrade Project
November 1, 2013
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